After describing the features desired in a transmitter for laser radar applications, the output characteristics of several configurations of frequency-stable TEA-CO2 lasers are reviewed. Based on work carried out at Defence Research Establishment Valcartier (DREV), output pulses from short-cavity lasers, CW-TEA hybrid lasers, and amplifiers for low-power pulses are examined. It is concluded that the technique of injecting a low-power laser beam into a TEA-CO2 laser resonator with Gaussian reflectivity mirrors should be investigated because it appears well-adapted to producing high-energy, single-mode, low-chirp pulses. Finally, a brief report on tests carried out on catalysts composed of stannic oxide and noble metals demonstrates the potential of these catalysts, operating at close to room temperature, to provide complete closed-cycle laser operation.